<template>
    <div>
        <div class="block">
            <el-tree
                :data="menuList"
                node-key="id"
                :expand-on-click-node="false">
                <span class="custom-tree-node" slot-scope="{ node, data }" @mouseenter="mouseenter(node,data)" @mouseleave="mouseleave">
                    <input type="text" v-model="listData" v-show="showTree==node.id" @blur="lose(node,data)" @keyup.enter="submit">
                    <span v-show="showTree!==node.id">{{ node.label }}</span>
                    <span v-show="showdelet==node.id">
                    <el-button
                        type="text"
                        size="mini"
                        @click="() => append(data)">
                        Append
                    </el-button>
                    <el-button
                        type="text"
                        size="mini"
                        @click="() => remove(node, data)">
                        Delete
                    </el-button>
                    <el-button
                        type="text"
                        size="mini"
                        @click="() => edit(node, data)">
                        edit
                    </el-button>
                    </span>
                </span>
            </el-tree>
        </div>
    </div>
</template>

<script>
 let id = 1000;
export default {
    name:'roleTree',
    props:{
      menuList:{
        type:Array,
        required: true
      }
    },
     data() {
      const data = [{
        id: 1,
        label: '一级 1',
        children: [{
          id: 4,
          label: '二级 1-1',
          children: [{
            id: 9,
            label: '三级 1-1-1'
          }, {
            id: 10,
            label: '三级 1-1-2'
          }]
        }]
      }, {
        id: 2,
        label: '一级 2',
        children: [{
          id: 5,
          label: '二级 2-1'
        }, {
          id: 6,
          label: '二级 2-2'
        }]
      }, {
        id: 3,
        label: '一级 3',
        children: [{
          id: 7,
          label: '二级 3-1'
        }, {
          id: 8,
          label: '二级 3-2'
        }]
      }];
      return {
        data: JSON.parse(JSON.stringify(data)),
        data: JSON.parse(JSON.stringify(data)),
        listData:'',
        showTree:-1,   //点击单个显示input
        showdelet:-1,   //移入现实增删改
      }
    },

    methods: {
      append(data) {
        const newChild = { id: id++, label: 'testtest', children: [] };
        if (!data.children) {
          this.$set(data, 'children', []);
        }
        data.children.push(newChild);
      },
      mouseenter(node,data){
          this.showdelet=node.id
      },
      mouseleave(){
          this.showdelet=-1
      },
      submit(){
          this.showTree=-1
      },
      remove(node, data) {
        const parent = node.parent;
        const children = parent.data.children || parent.data;
        const index = children.findIndex(d => d.id === data.id);
        children.splice(index, 1);
      },
      lose(node,data){
          this.showTree=-1
      },
      edit(node,data){
          this.listData=node.label
          this.showTree=node.id
          console.log(node)
      },

      renderContent(h, { node, data, store }) {
        return (h('div',333))
        // return (
        //   <span class="custom-tree-node">
        //     <span>{node.label}</span>
        //     <span>
        //       <el-button size="mini" type="text" on-click={ () => this.append(data) }>Append</el-button>
        //       <el-button size="mini" type="text" on-click={ () => this.remove(node, data) }>Delete</el-button>
        //     </span>
        //   </span>);
      }
    }
}
</script>

<style scoped lang="scss">

</style>
